Schedule I - Condensed Financial Information of Parent Schedule I - Condensed Financial Information of Parent (Statement of Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Income Statements, Captions [Line Items]
Interest income	$ 551	$ 389	$ 298
General and administrative expenses	(255)	(207)	(166)
Other expense	(99)	(68)	(60)
Gain (Loss) on Extinguishment of Debt	(63)	(15)	(78)
Interest expense	(1,319)	(1,117)	(911)
Income tax expense	(261)	(265)	133
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION	249	(546)	(409)
Revenues	12,668	12,617	11,141
Parent Company
Condensed Income Statements, Captions [Line Items]
Equity in earnings of subsidiaries and affiliates	598	(280)	(47)
Interest income	44	28	20
General and administrative expenses	(129)	(140)	(121)
Other income	11	14	51
Other expense	0	0	(65)
Interest expense	(230)	(163)	(74)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	325	(511)	(208)
Income tax expense	(76)	(35)	(201)
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION	249	(546)	(409)
Revenues	$ 31	$ 30	$ 28